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import argparse
import logging
import os
import sys
from typing import Any
from typing import Optional
from typing import Sequence
from typing import Union
import pre_commit.constants as C
from pre_commit import git
from pre_commit.color import add_color_option
from pre_commit.commands.autoupdate import autoupdate
from pre_commit.commands.clean import clean
from pre_commit.commands.gc import gc
from pre_commit.commands.hook_impl import hook_impl
from pre_commit.commands.init_templatedir import init_templatedir
from pre_commit.commands.install_uninstall import install
from pre_commit.commands.install_uninstall import install_hooks
from pre_commit.commands.install_uninstall import uninstall
from pre_commit.commands.migrate_config import migrate_config
from pre_commit.commands.run import run
from pre_commit.commands.sample_config import sample_config
from pre_commit.commands.try_repo import try_repo
from pre_commit.error_handler import error_handler
from pre_commit.logging_handler import logging_handler
from pre_commit.store import Store
logger = logging.getLogger('pre_commit')
# https://github.com/pre-commit/pre-commit/issues/217
# On OSX, making a virtualenv using pyvenv at . causes `virtualenv` and `pip`
# to install packages to the wrong place. We don't want anything to deal with
# pyvenv
os.environ.pop('__PYVENV_LAUNCHER__', None)
COMMANDS_NO_GIT = {'clean', 'gc', 'init-templatedir', 'sample-config'}
def _add_config_option(parser: argparse.ArgumentParser) -> None:
parser.add_argument(
'-c', '--config', default=C.CONFIG_FILE,
help='Path to alternate config file',
)
class AppendReplaceDefault(argparse.Action):
def __init__(self, *args: Any, **kwargs: Any) -> None:
super().__init__(*args, **kwargs)
self.appended = False
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: Union[str, Sequence[str], None],
option_string: Optional[str] = None,
) -> None:
if not self.appended:
setattr(namespace, self.dest, [])
self.appended = True
getattr(namespace, self.dest).append(values)
def _add_hook_type_option(parser: argparse.ArgumentParser) -> None:
parser.add_argument(
'-t', '--hook-type', choices=(
'pre-commit', 'pre-merge-commit', 'pre-push', 'prepare-commit-msg',
'commit-msg', 'post-commit', 'post-checkout', 'post-merge',
),
action=AppendReplaceDefault,
default=['pre-commit'],
dest='hook_types',
)
def _add_run_options(parser: argparse.ArgumentParser) -> None:
parser.add_argument('hook', nargs='?', help='A single hook-id to run')
parser.add_argument('--verbose', '-v', action='store_true', default=False)
mutex_group = parser.add_mutually_exclusive_group(required=False)
mutex_group.add_argument(
'--all-files', '-a', action='store_true', default=False,
help='Run on all the files in the repo.',
)
mutex_group.add_argument(
'--files', nargs='*', default=[],
help='Specific filenames to run hooks on.',
)
parser.add_argument(
'--show-diff-on-failure', action='store_true',
help='When hooks fail, run `git diff` directly afterward.',
)
parser.add_argument(
'--hook-stage', choices=C.STAGES, default='commit',
help='The stage during which the hook is fired. One of %(choices)s',
)
parser.add_argument(
'--remote-branch', help='Remote branch ref used by `git push`.',
)
parser.add_argument(
'--from-ref', '--source', '-s',
help=(
'(for usage with `--from-ref`) -- this option represents the '
'original ref in a `from_ref...to_ref` diff expression. '
'For `pre-push` hooks, this represents the branch you are pushing '
'to. '
'For `post-checkout` hooks, this represents the branch that was '
'previously checked out.'
),
)
parser.add_argument(
'--to-ref', '--origin', '-o',
help=(
'(for usage with `--to-ref`) -- this option represents the '
'destination ref in a `from_ref...to_ref` diff expression. '
'For `pre-push` hooks, this represents the branch being pushed. '
'For `post-checkout` hooks, this represents the branch that is '
'now checked out.'
),
)
parser.add_argument(
'--commit-msg-filename',
help='Filename to check when running during `commit-msg`',
)
parser.add_argument(
'--remote-name', help='Remote name used by `git push`.',
)
parser.add_argument('--remote-url', help='Remote url used by `git push`.')
parser.add_argument(
'--checkout-type',
help=(
'Indicates whether the checkout was a branch checkout '
'(changing branches, flag=1) or a file checkout (retrieving a '
'file from the index, flag=0).'
),
)
parser.add_argument(
'--is-squash-merge',
help=(
'During a post-merge hook, indicates whether the merge was a '
'squash merge'
),
)
def _adjust_args_and_chdir(args: argparse.Namespace) -> None:
# `--config` was specified relative to the non-root working directory
if os.path.exists(args.config):
args.config = os.path.abspath(args.config)
if args.command in {'run', 'try-repo'}:
args.files = [os.path.abspath(filename) for filename in args.files]
if args.command == 'try-repo' and os.path.exists(args.repo):
args.repo = os.path.abspath(args.repo)
toplevel = git.get_root()
os.chdir(toplevel)
args.config = os.path.relpath(args.config)
if args.command in {'run', 'try-repo'}:
args.files = [os.path.relpath(filename) for filename in args.files]
if args.command == 'try-repo' and os.path.exists(args.repo):
args.repo = os.path.relpath(args.repo)
def main(argv: Optional[Sequence[str]] = None) -> int:
argv = argv if argv is not None else sys.argv[1:]
parser = argparse.ArgumentParser(prog='pre-commit')
# https://stackoverflow.com/a/8521644/812183
parser.add_argument(
'-V', '--version',
action='version',
version=f'%(prog)s {C.VERSION}',
)
subparsers = parser.add_subparsers(dest='command')
autoupdate_parser = subparsers.add_parser(
'autoupdate',
help="Auto-update pre-commit config to the latest repos' versions.",
)
add_color_option(autoupdate_parser)
_add_config_option(autoupdate_parser)
autoupdate_parser.add_argument(
'--bleeding-edge', action='store_true',
help=(
'Update to the bleeding edge of `master` instead of the latest '
'tagged version (the default behavior).'
),
)
autoupdate_parser.add_argument(
'--freeze', action='store_true',
help='Store "frozen" hashes in `rev` instead of tag names',
)
autoupdate_parser.add_argument(
'--repo', dest='repos', action='append', metavar='REPO',
help='Only update this repository -- may be specified multiple times.',
)
clean_parser = subparsers.add_parser(
'clean', help='Clean out pre-commit files.',
)
add_color_option(clean_parser)
_add_config_option(clean_parser)
hook_impl_parser = subparsers.add_parser('hook-impl')
add_color_option(hook_impl_parser)
_add_config_option(hook_impl_parser)
hook_impl_parser.add_argument('--hook-type')
hook_impl_parser.add_argument('--hook-dir')
hook_impl_parser.add_argument(
'--skip-on-missing-config', action='store_true',
)
hook_impl_parser.add_argument(dest='rest', nargs=argparse.REMAINDER)
gc_parser = subparsers.add_parser('gc', help='Clean unused cached repos.')
add_color_option(gc_parser)
_add_config_option(gc_parser)
init_templatedir_parser = subparsers.add_parser(
'init-templatedir',
help=(
'Install hook script in a directory intended for use with '
'`git config init.templateDir`.'
),
)
add_color_option(init_templatedir_parser)
_add_config_option(init_templatedir_parser)
init_templatedir_parser.add_argument(
'directory', help='The directory in which to write the hook script.',
)
init_templatedir_parser.add_argument(
'--no-allow-missing-config',
action='store_false',
dest='allow_missing_config',
help='Assume cloned repos should have a `pre-commit` config.',
)
_add_hook_type_option(init_templatedir_parser)
install_parser = subparsers.add_parser(
'install', help='Install the pre-commit script.',
)
add_color_option(install_parser)
_add_config_option(install_parser)
install_parser.add_argument(
'-f', '--overwrite', action='store_true',
help='Overwrite existing hooks / remove migration mode.',
)
install_parser.add_argument(
'--install-hooks', action='store_true',
help=(
'Whether to install hook environments for all environments '
'in the config file.'
),
)
_add_hook_type_option(install_parser)
install_parser.add_argument(
'--allow-missing-config', action='store_true', default=False,
help=(
'Whether to allow a missing `pre-commit` configuration file '
'or exit with a failure code.'
),
)
install_hooks_parser = subparsers.add_parser(
'install-hooks',
help=(
'Install hook environments for all environments in the config '
'file. You may find `pre-commit install --install-hooks` more '
'useful.'
),
)
add_color_option(install_hooks_parser)
_add_config_option(install_hooks_parser)
migrate_config_parser = subparsers.add_parser(
'migrate-config',
help='Migrate list configuration to new map configuration.',
)
add_color_option(migrate_config_parser)
_add_config_option(migrate_config_parser)
run_parser = subparsers.add_parser('run', help='Run hooks.')
add_color_option(run_parser)
_add_config_option(run_parser)
_add_run_options(run_parser)
sample_config_parser = subparsers.add_parser(
'sample-config', help=f'Produce a sample {C.CONFIG_FILE} file',
)
add_color_option(sample_config_parser)
_add_config_option(sample_config_parser)
try_repo_parser = subparsers.add_parser(
'try-repo',
help='Try the hooks in a repository, useful for developing new hooks.',
)
add_color_option(try_repo_parser)
_add_config_option(try_repo_parser)
try_repo_parser.add_argument(
'repo', help='Repository to source hooks from.',
)
try_repo_parser.add_argument(
'--ref', '--rev',
help=(
'Manually select a rev to run against, otherwise the `HEAD` '
'revision will be used.'
),
)
_add_run_options(try_repo_parser)
uninstall_parser = subparsers.add_parser(
'uninstall', help='Uninstall the pre-commit script.',
)
add_color_option(uninstall_parser)
_add_config_option(uninstall_parser)
_add_hook_type_option(uninstall_parser)
help = subparsers.add_parser(
'help', help='Show help for a specific command.',
)
help.add_argument('help_cmd', nargs='?', help='Command to show help for.')
# argparse doesn't really provide a way to use a `default` subparser
if len(argv) == 0:
argv = ['run']
args = parser.parse_args(argv)
if args.command == 'help' and args.help_cmd:
parser.parse_args([args.help_cmd, '--help'])
elif args.command == 'help':
parser.parse_args(['--help'])
with error_handler(), logging_handler(args.color):
git.check_for_cygwin_mismatch()
if args.command not in COMMANDS_NO_GIT:
_adjust_args_and_chdir(args)
store = Store()
store.mark_config_used(args.config)
if args.command == 'autoupdate':
return autoupdate(
args.config, store,
tags_only=not args.bleeding_edge,
freeze=args.freeze,
repos=args.repos,
)
elif args.command == 'clean':
return clean(store)
elif args.command == 'gc':
return gc(store)
elif args.command == 'hook-impl':
return hook_impl(
store,
config=args.config,
color=args.color,
hook_type=args.hook_type,
hook_dir=args.hook_dir,
skip_on_missing_config=args.skip_on_missing_config,
args=args.rest[1:],
)
elif args.command == 'install':
return install(
args.config, store,
hook_types=args.hook_types,
overwrite=args.overwrite,
hooks=args.install_hooks,
skip_on_missing_config=args.allow_missing_config,
)
elif args.command == 'init-templatedir':
return init_templatedir(
args.config, store, args.directory,
hook_types=args.hook_types,
skip_on_missing_config=args.allow_missing_config,
)
elif args.command == 'install-hooks':
return install_hooks(args.config, store)
elif args.command == 'migrate-config':
return migrate_config(args.config)
elif args.command == 'run':
return run(args.config, store, args)
elif args.command == 'sample-config':
return sample_config()
elif args.command == 'try-repo':
return try_repo(args)
elif args.command == 'uninstall':
return uninstall(hook_types=args.hook_types)
else:
raise NotImplementedError(
f'Command {args.command} not implemented.',
)
raise AssertionError(
f'Command {args.command} failed to exit with a returncode',
)
if __name__ == '__main__':
exit(main())
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